{"id":"USN-3976-4","aliases":[],"status":"published","title":"samba vulnerability","description":"USN-3976-1 fixed a vulnerability in Samba. The update introduced a\nregression causing Samba to occasionally crash. This update fixes the\nproblem.\n\nOriginal advisory details:\n\n Isaac Boukris and Andrew Bartlett discovered that Samba incorrectly checked\n S4U2Self packets. In certain environments, a remote attacker could possibly\n use this issue to escalate privileges.","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2019-05-27T17:39:26Z","modified":"2026-04-22T09:56:29Z","fixes":[{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"samba","fixed_in":["2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2"}]}],"versions":["2:3.6.18-1ubuntu3","2:4.0.10+dfsg-4ubuntu2","2:4.0.13+dfsg-1ubuntu1","2:4.1.3+dfsg-2ubuntu2","2:4.1.3+dfsg-2ubuntu3","2:4.1.3+dfsg-2ubuntu4","2:4.1.3+dfsg-2ubuntu5","2:4.1.6+dfsg-1ubuntu1","2:4.1.6+dfsg-1ubuntu2","2:4.1.6+dfsg-1ubuntu2.14.04.1","2:4.1.6+dfsg-1ubuntu2.14.04.2","2:4.1.6+dfsg-1ubuntu2.14.04.3","2:4.1.6+dfsg-1ubuntu2.14.04.4","2:4.1.6+dfsg-1ubuntu2.14.04.5","2:4.1.6+dfsg-1ubuntu2.14.04.7","2:4.1.6+dfsg-1ubuntu2.14.04.8","2:4.1.6+dfsg-1ubuntu2.14.04.9","2:4.1.6+dfsg-1ubuntu2.14.04.11","2:4.1.6+dfsg-1ubuntu2.14.04.12","2:4.1.6+dfsg-1ubuntu2.14.04.13","2:4.3.8+dfsg-0ubuntu0.14.04.2","2:4.3.9+dfsg-0ubuntu0.14.04.1","2:4.3.9+dfsg-0ubuntu0.14.04.3","2:4.3.11+dfsg-0ubuntu0.14.04.1","2:4.3.11+dfsg-0ubuntu0.14.04.2","2:4.3.11+dfsg-0ubuntu0.14.04.3","2:4.3.11+dfsg-0ubuntu0.14.04.4","2:4.3.11+dfsg-0ubuntu0.14.04.6","2:4.3.11+dfsg-0ubuntu0.14.04.7","2:4.3.11+dfsg-0ubuntu0.14.04.8","2:4.3.11+dfsg-0ubuntu0.14.04.9","2:4.3.11+dfsg-0ubuntu0.14.04.10","2:4.3.11+dfsg-0ubuntu0.14.04.11","2:4.3.11+dfsg-0ubuntu0.14.04.12","2:4.3.11+dfsg-0ubuntu0.14.04.13","2:4.3.11+dfsg-0ubuntu0.14.04.14","2:4.3.11+dfsg-0ubuntu0.14.04.16","2:4.3.11+dfsg-0ubuntu0.14.04.17","2:4.3.11+dfsg-0ubuntu0.14.04.19","2:4.3.11+dfsg-0ubuntu0.14.04.20","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm1"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-3976-4","tags":["advisory"]},{"url":"https://launchpad.net/bugs/1827924","tags":["report"]}],"sources":{"osv":[{"id":"USN-3976-4","title":"samba vulnerability","description":"USN-3976-1 fixed a vulnerability in Samba. The update introduced a\nregression causing Samba to occasionally crash. This update fixes the\nproblem.\n\nOriginal advisory details:\n\n Isaac Boukris and Andrew Bartlett discovered that Samba incorrectly checked\n S4U2Self packets. In certain environments, a remote attacker could possibly\n use this issue to escalate privileges.\n","status":"published","published":"2019-05-27T17:39:26Z","modified":"2026-04-22T09:56:29.594704Z","updated_at":"2026-11-02T16:58:14.019824Z"}]}}